Stock Exhaust size

This is a discussion on Stock Exhaust size within the External Engine forums, part of the LSx Technical Help Section category; What size pipe is in the factory catback?
Specifically the size where the y-pipe connects to the catback.
Planning a ...

Thanks 35th-ANV-SS. I thought it was 2.75. I have another car setting on my ramps and stands right now, but the band clamp failed between the y-pipe and catback. Since I have to order parts, I figured why not a cutout.
Any recommendations on brand?

DMH or QTP I've heard good things about. I personally don't have one as my set-up is already ridiculously loud.

I'm running the stock catback and BBK headers and y without cats now. Its nice for cruising. But I think it needs to be a little or maybe a lot louder at times. Never heard of DMH, but I'll find them online.